+1 This stuff is snake oil.On any modern liquid-to-air cooled engine coolant temperature is controlled by the thermostat. Once the coolant reaches the t-stat's opening temperature flow through the radiator begins; after that the thermostat continuously opens further and closes as needed to maintain an equilibrium between the heat generated by the engine and the cooling system's ability to shed that heat into the ambient air--to keep the coolant temperature at the thermostat's nominal rating.
There is nothing that could be added to the coolant fluid that would alter the temperature at which the thermostat strikes that equilibrium--anyone that says otherwise is a fool at best, but more likely a liar...
Regular 50-50 antifreeze such as Prestone or other brand good to -35°F.I use it because it has freeze protection (down to -26 F) and a lot of track day organizations allow it. That way if we get a late cold snap or an early freeze, I don't have to worry about engine damage before I put my track bike into storage. It's also non-toxic, and so that keeps my wife happy (we have dogs). As far as actual cooling ability, pure water has the best ability to cool a motor. We add the other stuff to prevent corrosion, provide freezing protection, and lubricate moving parts like the water pump.
And to raise the boiling point because a coolant that boils is no good at all. The other thing that raises the boiling point is pressure as in the I think it was .8 bar radiator cap (closest psi cap is 13 I think) on the 650.As far as actual cooling ability, pure water has the best ability to cool a motor. We add the other stuff to prevent corrosion, provide freezing protection, and lubricate moving parts like the water pump.